Suspension bearing-scale.



No. 830,856. PATENTBD SEPT. 11, 1906.

W. H. SARGENT. SUSPENSION BEARING SCALE.

APPLICATION TILED NOV. 22. 1905.

form of bearing. same. Fig. 7 is an elevatlon of a double loop UNITEDSTATES PATENT OFFICE.

\VILLIS H. SARGENT, OF ST. JOHNSBURY, VERMONT, ASSIGNOR TO E. AND T.FAIRBANKS AND COMPANY, OF ST. JOHNSBURY, VER- MONT, A CORPORATION OFVERMONT.

SUSPENSION BEARING-SCALE- Specification of Letters Patent.

Patented Sept. 11, 1906.

Application filed November 22,1905. Serial No. 288.579.

To all whom it may concern:

Be it known that I, WILLIs H. SARGENT, a citizen of the United States,residing at St. J ohnsbury, in the county of Caledonia, State ofVermont, have invented certain new and useful Improvements in SuspensionBearing- Scales, of which the following is a description, referencebeing had to the accompanying drawings and to the letters of referencemarked thereon.

This invention relates to suspension-bearing weighing-scales, and hasfor its principal object to provide an improved construction of bearingof that type in which agate or similar non-corrodible material isemployed.

With this and other objects in view the invention consists in the novelconstruction an d arrangement of parts hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims.

In the drawings, which illustrate the invention, Figure 1 is a plan viewof one of the bearings or loops. Fig. 2 is an elevation of the same.Fig. 3 is an end view of the bearing, taken at a right angle to Fig. 2and showing one of the levers in section. Fig. 4 is a face view of aportion of one of the levers. Fig. 5 is an elevation of aslightly-modified Fig. 6 is an end view of the for use at the center ofthe scale, and Fig. 8 is an end elevation of the same, and Figs. 9 and10 show difierent-forms of loops which may be employed.

Similar reference characters indicate simi lar parts throughout thespecification and drawings.

The bearings are each formed of a block b, of non-corrodible material,such as agate, and each block has a recess it formed in one face for thereception of a knife-edge or similar pivot. That face of the blockopposite the I notch fits within the parallel side flangesf of a platea, formed, preferably, of metal, and the opposite ends of said plate areprovided with alining notches g for the reception of the side bars of aloop or bail c, the ends of which may be lap-jointed, as shown at b inFig. 9, or may abut, as shown at 6 in Fig. 10, or the link may becontinuous.

In order to reduce friction between the bearing-block and the lever, itis found desirable to provide the latter with a reduced friction-pointi, arranged in vertical alinement with the knife-edge and designed forcontact with the side of the block. Inasmuch as the friction-point isdisposed in part in the plane of the flange f, the latter is recessed orspaced, as clearly shown in Fig. 2. This construction, however, is notessential in all cases, and the flange may extend all the way across theblock, as shown in Fig. 5. v

The side bars of the link are bent inward, as at d, in such manner as toallow slight freedom of movement of the block without permittingdetachment.

The construction is such that the bearing rocks on the back of itsmounting, and the cross-bar of the loop forms a support that eX- tendsentirely across the block. The latter is thus furnished with anefficient support, but is free to rock, so that the sensitiveness of thescale is materially increased.

The several corner-bearings are arranged in the manner described, andfor the center of the scale a double bearing, as shown in Figs. 6 and 7,is used, each loop holding two opposed bearing-blocks and the side wallsof the link being bent inward, as shown at d, to prevent displacement ofeither block.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a scale-loop, a bearing-block, a backing-plate therefor, and abail entirely encircling the block and plate, but in engagement onlywith the outer face of the latter, the plate serving to hold the sidearms of the loop out of contact with the sides of the block,substantially as described.

2. In a scale-loop, a bearing-block, a backing-plate having edge flangesfitting over the block and having end notches, and a bail or link memberencircling the block and entered in said notches.

3. In a scale-loop, a bearing-block, a backing-plate having end notches,and a bail fitting in the notches and encircling the plate and block,the sides of the bail being free from engagement with said block.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIS n. SARGENT.

. Witnesses:

FRANK O. FRENCH, J. M. PERHAM.

